Two mineral assemblages in the Laihe iron-formation are recognized: (1) eulite (Fs87) +hedenbergite +quartz + magnitite ±laihunite ; and (2) grunerite +ferro-edenite hornblende +quartz +magnetite ±carbonite±Fe-jimthompsonite.
小莱河太古宙麻粒岩相铁建造的矿物组合有：①斜方辉石（Fs87）＋钙铁辉石＋石英＋磁铁矿±莱河矿；②铁闪石＋铁浅闪石质角闪石＋石英＋磁铁矿＋碳酸盐±Fe－镁川石（云辉闪石）。
Through detailed research on sample analysis result from energy spectrum,scanning electron microscope and ordinary optical microscope,an unusual amphibole mineral is discovered—magnesium rich arfvedsonite,sourcing from secondary alteration of titanite,which is a very unusual mineral metasomatic alteration phenomenon,that is,natrium and ma.
富镁亚铁钠闪石由榍石次生蚀变而来,是一种罕见的矿物交代蚀变现象,即榍石的钠铁闪石化,此现象对深层裂缝发育的砾岩带的储层演化研究有很大的意义。
Using thin section X-ray diffraction techniques,his paper identified arfvedsonite in volcanic rocks from Songliao Basin,and thus confirmed that the volcanic rocks are composed of pantellerite.
利用岩石薄片X衍射技术,在松辽盆地深层富碱酸性火山岩中识别出特征的碱性暗色矿物——钠铁闪石,从而确定其为碱流岩。
